Spec rendering is broken

[gibson042]

cf. https://travis-ci.org/github/tc39/ecma402/jobs/693639039#L216

[travis-scripts] [✖] Error: expecting EOF, got parabreak
[travis-scripts] [✖] at Function.parseFragment (/home/travis/build/tc39/ecma402/node_modules/ecmarkdown/dist/parser.js:23:19)
[travis-scripts] [✖] at Object.fragment (/home/travis/build/tc39/ecma402/node_modules/ecmarkdown/dist/ecmarkdown.js:13:73)
[travis-scripts] [✖] at Object.emdTextNode (/home/travis/build/tc39/ecma402/node_modules/ecmarkup/lib/utils.js:20:30)
[travis-scripts] [✖] at walk (/home/travis/build/tc39/ecma402/node_modules/ecmarkup/lib/Spec.js:595:19)
[travis-scripts] [✖] at walk (/home/travis/build/tc39/ecma402/node_modules/ecmarkup/lib/Spec.js:648:13)
[travis-scripts] [✖] at walk (/home/travis/build/tc39/ecma402/node_modules/ecmarkup/lib/Spec.js:648:13)
[travis-scripts] [✖] at walk (/home/travis/build/tc39/ecma402/node_modules/ecmarkup/lib/Spec.js:648:13)
[travis-scripts] [✖] at walk (/home/travis/build/tc39/ecma402/node_modules/ecmarkup/lib/Spec.js:648:13)
[travis-scripts] [✖] at walk (/home/travis/build/tc39/ecma402/node_modules/ecmarkup/lib/Spec.js:648:13)
[travis-scripts] [✖] at Spec.<anonymous> (/home/travis/build/tc39/ecma402/node_modules/ecmarkup/lib/Spec.js:166:13)
[travis-scripts] [✖] npm ERR! code ELIFECYCLE
[travis-scripts] [✖] npm ERR! errno 1
[travis-scripts] [✖] npm ERR! ecma402@7.0.0 build-master: `mkdir out && cp -R img out && ecmarkup --verbose spec/index.html out/index.html --css out/ecmarkup.css --js out/ecmarkup.js`
[travis-scripts] [✖] npm ERR! Exit status 1
[travis-scripts] [✖] npm ERR!
[travis-scripts] [✖] npm ERR! Failed at the ecma402@7.0.0 build-master script.
[travis-scripts] [✖] npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
[travis-scripts] [✖] 
[travis-scripts] [✖] npm ERR! A complete log of this run can be found in:
[travis-scripts] [✖] npm ERR!     /home/travis/.npm/_logs/2020-06-01T22_40_53_040Z-debug.log
[travis-scripts] [✖] npm ERR! code ELIFECYCLE
[travis-scripts] [✖] npm ERR! errno 1
[travis-scripts] [✖] npm ERR! ecma402@7.0.0 build-travis: `npm run build-master && npm run build-es2020`
[travis-scripts] [✖] npm ERR! Exit status 1
[travis-scripts] [✖] npm ERR!
[travis-scripts] [✖] npm ERR! Failed at the ecma402@7.0.0 build-travis script.
[travis-scripts] [✖] npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
[travis-scripts] [✖] 
[travis-scripts] [✖] npm ERR! A complete log of this run can be found in:
[travis-scripts] [✖] npm ERR!     /home/travis/.npm/_logs/2020-06-01T22_40_53_076Z-debug.log
[travis-scripts] [✖] Update content

I suspect this is related to the same ecmarkup issue that I just fixed worked around in proposal-intl-segmenter with tc39/proposal-intl-segmenter#112